Not on my team: Medial prefrontal cortex responses to ingroup fusion and unfair monetary divisions

Humans are highly attuned to fairness, with people willingly suffering personal costs to prevent others benefitting from unfair acts. Are fairness judgments influenced by group alignments? A new theory posits that we favour ingroups and denigrate members of rival outgroups when our personal identity...

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Main Authors: Apps, M, Mckay, R, Azevedo, R, Whitehouse, H, Tsakris, M
Format: Journal article
Published: Wiley 2018
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author Apps, M
Mckay, R
Azevedo, R
Whitehouse, H
Tsakris, M
author_facet Apps, M
Mckay, R
Azevedo, R
Whitehouse, H
Tsakris, M
author_sort Apps, M
collection OXFORD
description Humans are highly attuned to fairness, with people willingly suffering personal costs to prevent others benefitting from unfair acts. Are fairness judgments influenced by group alignments? A new theory posits that we favour ingroups and denigrate members of rival outgroups when our personal identity is fused to a group. Although the medial prefrontal cortex (MPFC) has been separately implicated in group membership and fairness processing, it is unclear whether group alignments affect MPFC activity in response to fairness. Here, subjects performed rounds of the Ultimatum Game, being offered fair or unfair divisions of money from supporters of the same soccer team (ingroup), the fiercest rival (outgroup) or neutral individuals. Strikingly, people willingly suffered personal costs to prevent outgroup members benefitting from both unfair and fair offers. Activity across dorsal and ventral (VMPFC) portions of the mPFC reflected an interaction between fairness and group membership. VMPFC activity in particular was consistent with it coding one’s fusion to a group, with the fairness by group membership interaction correlating with the extent that the responder’s identity was fused to the ingroup. The influence of fusion on social behavior therefore seems to be linked to processing in the VMPFC.
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spelling oxford-uuid:c70d8e75-6649-4818-96c4-f27bc83f49ef2022-03-27T06:42:21ZNot on my team: Medial prefrontal cortex responses to ingroup fusion and unfair monetary divisionsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:c70d8e75-6649-4818-96c4-f27bc83f49efSymplectic Elements at OxfordWiley2018Apps, MMckay, RAzevedo, RWhitehouse, HTsakris, MHumans are highly attuned to fairness, with people willingly suffering personal costs to prevent others benefitting from unfair acts. Are fairness judgments influenced by group alignments? A new theory posits that we favour ingroups and denigrate members of rival outgroups when our personal identity is fused to a group. Although the medial prefrontal cortex (MPFC) has been separately implicated in group membership and fairness processing, it is unclear whether group alignments affect MPFC activity in response to fairness. Here, subjects performed rounds of the Ultimatum Game, being offered fair or unfair divisions of money from supporters of the same soccer team (ingroup), the fiercest rival (outgroup) or neutral individuals. Strikingly, people willingly suffered personal costs to prevent outgroup members benefitting from both unfair and fair offers. Activity across dorsal and ventral (VMPFC) portions of the mPFC reflected an interaction between fairness and group membership. VMPFC activity in particular was consistent with it coding one’s fusion to a group, with the fairness by group membership interaction correlating with the extent that the responder’s identity was fused to the ingroup. The influence of fusion on social behavior therefore seems to be linked to processing in the VMPFC.
spellingShingle Apps, M
Mckay, R
Azevedo, R
Whitehouse, H
Tsakris, M
Not on my team: Medial prefrontal cortex responses to ingroup fusion and unfair monetary divisions
title Not on my team: Medial prefrontal cortex responses to ingroup fusion and unfair monetary divisions
title_full Not on my team: Medial prefrontal cortex responses to ingroup fusion and unfair monetary divisions
title_fullStr Not on my team: Medial prefrontal cortex responses to ingroup fusion and unfair monetary divisions
title_full_unstemmed Not on my team: Medial prefrontal cortex responses to ingroup fusion and unfair monetary divisions
title_short Not on my team: Medial prefrontal cortex responses to ingroup fusion and unfair monetary divisions
title_sort not on my team medial prefrontal cortex responses to ingroup fusion and unfair monetary divisions
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